Trussed brake-beam



(No Model.)

H. B. RUBISCHUNG. TRUSSED BRAKBBEAM.

No. 440,438. Patented Nov. 11, 1890.

UNITED STATES PATENT OFFICE.

HENRY B. ROBISOHUNG, OF KALAMAZOO, MICHIGAN, ASSIGNOR TO THE NATIONAL IIOLLOIV BRAKE BEAM COMPANY, OF CHICAGO, ILLINOIS.

TRUSSED BRAKE-BEAM.

SPECIFICATION forming part of Letters Patent No. 440,438, dated November 11,1890.

Application filed Septembez 5, 1890. Serial No. 364,036. (No model.)

To aZZ whom it may concern:

Be it known thatI, HENRY B. ROBISCHUNG,

a citizen of the United States, residing at Kal- I rod sufficient to illustrate the connections and relations of the strut or post. Fig. 3 is a detached side elevation of the strut or post, or a View at right angles to Fig. 2. Fig. t is a detached View of the nose-piece or draft-block of the strut or post.

Like symbols refer to like parts wherever they occur.

My invention relates to the construction of trussed brake-beams for six-wheeled trucks, such as are commonly used under passenger and sleeping cars, and has for its object to strengthen the truss or post and relieve the truss-rod of strain by transferring the pull or strain to the strut or post back of the trussrod and to the beam, and also to take up any slack in the beam, or, in other words, to ap ply the power to the trussed structure with like effect as is now done by levers acting on the strut or post between the truss-rod and beam, so as to bring out the full strength of the structure.

In the case of trussedbrake-beams for ordinary four-wheel trucks the arrangement and space are such that the brake-levers can be pivoted on the strut or post between the truss rod and beam and the pull-rods connected to the brake-levers; but with six-wheel trucks it becomes necessary to connect the pull-rod directly with the nose or outer end of the strut. (Indicated in Fig. 1 of the drawings) As a result of such connection the draft-strain is brought on the weakest and least supported portion of the structure and is transferred from the strut to the truss-rod or tension-rod, which precludes the taking up of any lost motion or slack in the beam, and as a result the full strength of the trussed structure is not brought out and the fracture of the nose of the strut or that portion to which the pull-rod is attached liable to occur. In order to overcome said objections I combine with the strut or post a projecting nose-piece or noseblock for the attachment of the pull-rod, said nose-piece so bolted or otherwise secured to the strut or post as to transfer the strain or pull to the strut or post back of the tensionrod and thence to the beam, while allowing the tension-rod or truss-rod the same freedom of adjustment it possesses in trussed beams as now constructed.

I will now proceed to describe my invention more fully, so that others skilledin the art to which it appertains may apply the same.

In the drawings, A indicates a brake-beam, which in a trussed structure occupies the position of the rod; B, the tension-rod or trussrod; 0, the strut or post, and D the brakehead. In Fig. 1 0f the drawings said structure is for purposes of illustration shown in position or as applied to the Wheel E of a sixwheel truck, being suspended by the two hangers a l) and operated by the series of pullrods 0 d e f and intermediate levers g h, the latter suspended by the hanger 1', though, as the system of pull-rods and levers form no part of the present invention, any other arrangement thereof may be used.

The strut or post 0, which embodies the main points of the invention, I usually form as a solid or ribbed post throughout the portion 2, omitting the usual lever-slot, but retaining: on the outer end of the post proper the usual concave seat 2 for the reception of the truss or tension rod, and I bifurcate or slot the post proper at its outer end transversely of the tension-rod C, as at 3, for the reception of a nose-piece or nose-block 4. On the outer end of the post proper I also provide perforated lugs or eyes 5 for the second hanger b, and such lugs also strengthen the post at that point. Just back of the end of the post, but through the slotted portion thereof, is abolt-hole for the bolt 6, which secures the nose-block to the post.

The nose-block 4 is provided with a bolthole 7 for the passage of bolt 6,said bolt-hole of such size as to prevent any play of the noseblock in the slot of the post and so placed as to insure the end of the block 4 fitting squarely on the bottom of the slot in the end of the post. At a point corresponding With the seat 3 for the tension or truss rod a second hole 8 is formed for the passage of the truss-rod B, and saidhole 8 is sufiiciently largerthan the cross-sectional area of the truss-rod to leave the truss-rocl free and prevent any strain or I; tension thereon from the pull on the noseblock. Near the outer end of the nose-block is a third hole 9 for the attachment of the pull-rod c or its equivalent.

In practice I prefer to form the post proper of malleableized cast-iron, as is now commonly done in such structures, and to form the nose-block of steel or equivalent material capable of resisting great tensile strain, but do not herein limit myself to any particular 2 5 metals, as any of suitable character may be used at will.

Having thus described my invention, What I claim, and desire to secure by Letters Patent, is-

1. The combination, with the post of a 0 trussed brake-beam, of a pull or nose block, substantially as and for the purposes specilied.

2. A strut or post for-trussed brake-beams, said post slotted at its outer end and pro- 3 5 vided with a pull or nose block, substantially as and for the purposes specified.

3. The combination, in a trussed brakebeam, of a tension or truss rod and a strut or post having a nose or pull block provided 40 with a hole for the passage of the tension-rod, said hole being larger than the cross-sectional area of the tension-rod, substantially as and for the purposes specified.

In testimony whereof I aflix my signature, in presence of two Witnesses, this 30th day of August, 1890.

HENRY B. ROBISOHUNG.

Witnesses:

E. B. LEIGH, GEORGE W. RUssELL. 

